Home / 31,618.78-43,654.25-20,293.16

Finding the Fourth Proportional to 31,618.78, 43,654.25 and 20,293.16

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Solution

The fourth proportional to 31,618.78, 43,654.25 and 20,293.16 is: 28,017.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,618.78 : 43,654.25 = 20,293.16 : x
  2. Step 2: Convert to fraction form
    31,618.78/43,654.25 = 20,293.16/x
  3. Step 3: Cross multiply
    31,618.78x = 43,654.25 × 20,293.16
  4. Step 4: Simplify right side
    31,618.78x = 885,882,512.39
  5. Step 5: Solve for x
    x = 885,882,512.39/31,618.78
  6. Step 6: Final answer
    x = 28,017.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.